Connection member for connecting bicycle rack and extention tube connected to vehicles

ABSTRACT

A connection member is connected to a bicycle rack at an engaging plate on a top of the connection member and a through hole is defined through the connection plate. A polygonal wall extends from a side of the connection member and encloses the through hole. A rectangular extension tube is connected to a vehicle and is inserted through the through hole. Bolts extend through the polygonal wall and are engaged with the extension tube.

FIELD OF THE INVENTION

[0001] The present invention relates to a connection member for beingconnected with a bicycle rack and the connection member has a throughhole enclosed by a polygonal wall. The extension tube extends throughthe through hole and is fixed by the polygonal wall.

BACKGROUND OF THE INVENTION

[0002] A conventional bicycle rack 50 is connected to a connectionmember 43 which is fixed to an extension tube 41 connected with aconnection sphere 421 on a frame 42. The extension tube 41 is fixed to arear end of the vehicle and the connection member 43 has two lugs 431extending from an underside thereof. The extension tube 41 is locatedbetween the two lugs 431 and a bolt 432 extends through the lugs 431 andthrough the extension tube 41. Nevertheless, the connection member 43tends to shake during riding of the vehicle and the shaking istransferred to the bicycle rack and the bicycles on the rack. Thisresults a severe shear force on the bolt 432 which could be brokenwithin a short period of time.

[0003] The present invention intends to provide a connection member thatcan be fixedly connected to the extension tube so as to prevent theshaking of the bicycle rack.

SUMMARY OF THE INVENTION

[0004] In accordance with one aspect of the present invention, there isprovided n assembly for connecting a connection member and an extensiontube. The connection member is connected to a bicycle rack and theextension tube is connected to a vehicle. The connection member has athrough hole which is enclosed by a polygonal wall extending from a sideof the connection member. The extension tube is inserted through thethrough hole. The polygonal wall has at least one hole definedtherethrough and the extension tube has at least one threaded hole. Abolt extends through the at least one hole and is engaged with the atleast one threaded hole.

[0005] The present invention will become more obvious from the followingdescription when taken in connection with the accompanying drawingswhich show, for purposes of illustration only, a preferred embodiment inaccordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006]FIG. 1 is an exploded view to show the connection member and theextension tube of the present invention;

[0007]FIG. 2 is a side view to show the connection of the connectionmember and the extension tube of the present invention;

[0008]FIG. 3A shows that the bicycle rack is to be connected on anengaging plate on the connection plate;

[0009]FIG. 3B shows that the bicycle rack is connected on an engagingplate on the connection plate;

[0010]FIG. 4 is a perspective view to show assembly of the bicycle rack,the connection plate and the extension tube of the present invention;

[0011]FIG. 5 is an exploded view to show a conventional connection plateand the an extension tube, and

[0012]FIG. 6 is a perspective view to show assembly of the bicycle rack,the conventional connection plate and the extension tube.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0013] Referring to FIGS. 1, 2 and 4, the connection plate 20 of thepresent invention comprises a through hole 22 defined therethrough whichis enclosed by a polygonal wall 23 extends from a side of the connectionmember 20. The polygonal wall 23 has two holes 231 defined in two sidesof the polygonal wall 23. An engaging plate 21 is extended from a top ofthe connection member 20 so that a bicycle rack 50 is connected to theengaging plate 21.

[0014] A rectangular extension tube 10 is connected to a frame 30 and aconnection sphere 31 is connected to the frame 30. The extension tube 10is connected to a rear end of a vehicle (not shown) and inserted throughthe through hole 22. The extension tube 10 has two threaded holes 11 intwo sides thereof so that two bolts 24 extend through the holes 231 andare engaged with the threaded holes 11. By this arrangement, theconnection plate 20 is firmly connected to the extension tube 10.

[0015] The extension tube 10 is enclosed by the polygonal wall 23 andtwo bolts 24 are used to connect the extension tube 10 and the polygonalwall 23 in two directions so that the connection plate 20 is preventedfrom shaking during riding of the vehicle.

[0016] While we have shown and described the embodiment in accordancewith the present invention, it should be clear to those skilled in theart that further embodiments may be made without departing from thescope of the present invention.

What is claimed is:
 1. An assembly for connecting a connection memberand an extension tube, the connection member connected to a bicycle rackand the extension tube connected to a vehicle, wherein the connectionmember has a through hole and a polygonal wall extending from a side ofthe connection member and enclosing the through hole, the extension tubeinserted through the through hole, the polygonal wall having at leastone hole defined therethrough and the extension tube having at least onethreaded hole, a bolt extending through the at least one hole andengaged with the at least one threaded hole.